About 4 days ago I noticed a white sac with something red in the middle protruding from Sweetheart's (my betta fish) belly/anal area. She is normally a very deep purple but she is now pale and white on the bottom of her facial area. I'm desperate and don't know what to do. I don't know if it is poop or if something else is happening to her. Anytime she has tried to eat she always spits it back out. I normally feed her flake food and today I tried a pea.

I'm sorry I can't help but everyone requests this to be filled out. Hope she gets better.

Housing
What size is your tank?
What temperature is your tank?
Does your tank have a filter?
Does your tank have an air stone or other type of aeration?
Is your tank heated?
What tank mates does your betta fish live with?

Food
What type of food do you feed your betta fish?
How often do you feed your betta fish?

Maintenance
How often do you perform a water change?
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change?

Water Parameters:
Have you tested your water? If so, what are the following parameters?

Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed?
How has your betta fish's behavior changed?
When did you start noticing the symptoms?
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?
How old is your fish (approximately)?

Thank you!
Housing
What size is your tank? 1.5 gallon
What temperature is your tank? 73 degrees F
Does your tank have a filter?Yes
Does your tank have an air stone or other type of aeration? Yes
Is your tank heated? No
What tank mates does your betta fish live with? None

Food
What type of food do you feed your betta fish? flakes
How often do you feed your betta fish? one-two times a day

Maintenance
How often do you perform a water change? I clean the whole tank and change the filter about once a month. I also do a water change whenever the water quality appears to have deteriorated.
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change? dechlorinator

Water Parameters:
Have you tested your water? If so, what are the following parameters? No

Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed? extremely pale and bloated
How has your betta fish's behavior changed? lethargic
When did you start noticing the symptoms? 4 days ago
Have you started treating your fish? If so, how? changed the water, attempted to feed a pea, but she didn't eat it.
Does your fish have any history of being ill? she had ick about a year ago but made a full recovery.
How old is your fish (approximately)? approximately 2 years old.